If you have Turbotax desktop for 2021, you can find the Schedule D for AMT for that year by doing the following:
Open Turbotax 2021. From the pull down menu at the top, click on "View" and then click on the "Open Form" button.
In the search box, type "Schedule D AMT".
Select (double click) the "Schedule D AMT: capital gains and losses AMT" from the options presented and you will get the necessary form, whether or not it is among the Forms listed in the full list of forms in the column at the left.
